His final race was the Clasica San Sebastian, where he did not make it to the finish. He had stated he was preparing for the time-trial World championships, however has decided to call it early, and has retired already. He will likely keep having a role within cycling,
perhaps as a performance manager for Intermarché - Wanty - Gobert Matériaux.
Dumoulin was one of the most successful Dutch riders of recent time. Having won the 2017 Giro d'Italia he also became one of the most successful Grand Tour riders of the past generation. Inbetween his palmarès there have also been wins at the time-trial World championships, the BinkBank Tour, and stages in all Grand Tours which include time-trials, mountainous days and hilly days aswell.